ip address of all clients

hi...i m in trouble i need a code urgently...i wll tell my requirements
--->i want to know who all are connected to my server in LAN...
i m using a proxy server to monitor my LAN i just want a code which tell who all client's IP are connected at that instance....
thanks in advance..

This is not a Java question. Your server's OS may provide that information through an interface, or your proxy server if all connections actually go through it. You will have to research to determine if that information is made available and how. Once you know the answer to those questions, you can start to think about the means to access the information.

Last time I checked, Micro$oft was not a big supporter of Java. You will have to look at the support M$ provides for your purpose and determine an approach that makes sense. I doubt M$ will provide a Java-compatible API, however...